Furnace for heating old tinned sheet-iron boxes and the like to render them suitable to be detined.



K. GOLDSGHMIDT & (I. WEBER. FURNACE FOR HEATING OLD TINNED SHEET IRON BOXES AND THE LIKETO RENDEE THEM SUITABLE .TO BE DETINNBD. APPLICATION FILED APRJ], 1908.

Patented Dec. 6, 1910.

2 SHEETS-SHEET 1.

"Inventor: Karl Goldschmiclt Joseph Weber Witnesses 68% Attorney 2 SHEETS-SHEET 2.

SUITABLE TO BE DETINNED. APPLIOATION FILED APR, s, 1908.

K. GOLDSOHMIDT & J WEBER. FOR HEATING OLD TINNED SHEET IRON BOXES AND THE LIKE TO RBNDER THEM FURNAU Wii'nesse t run srA'rns PAE NT Pr on.

KARL sonnsonmrn'r m) JosErwEBER, or ESSEN ON-THE-RUHE, GERMANY, AS- SIGNOBS roeonnscmvrmr. DETINNING COMPANY, or JERSEY err-r, new JERSEY,

- Y l Application filed April 8, 1903. Serial No. 425,948. 4

A.CQBPORATION OF NEW JERSEY.

meme For. nnArIneoLD "rm vnn sneer-Iron BOXES AND TLHE To' all whoniiet may concern: i

- I Be it known that we,' KanI;-GoLD"s cHMIoT andJosnr TVEBER, subjects of theKing of Prussia; German Emperor, andresiidents of" Essen-on-the Ruhr, German Empire," have jointlyinvented anew and useful Furnace 7 for HeatingOld Tinned- Sheet-Iron Boxes 1 andv the Like to Render Thein Suitable for pBeing 'Detinned, ofwhich the following 11s ail-exact specification.

There have been described several devices for heating tinned .sheet iron objects for the purpose of"reinoving either the' solder or the solder together: withthe' tin. From all ,of them the present; invention differs mas "much" assthe cylinder, in which the articles to' be .detinned. are exposed to heat, is transportablein suchra manner that the cylinder with its contents hiay previously be treated according to Letters Patent No. 836,028 in a vat with hot alkaline solution andthen in a basin filled with water and from thence brought into the furnace. I

' 2'5, 1 a cross section of the furnace with the cylin- In the accompanying drawings forming partof this specification Figure 1 represents der, Fig.2 a longitudinal section taken in the plane'indicated by the line 12 of Fig.

1 Fig. 3 a horizontal section.

Similar letters refer' to similar parts throughout the several Views.

The transportable cylinder or drum A made of perforated sheetiron or wire-gauze and provided with a lid B for filling and emptying,'rests with trunnions in bearings C and may be revolved around its shaft by means of a pinion or a suitable system of gearing D driven from [outside the furnace. The supports E bearing the drum mfist be supported on a groundwork F separateirom that of thefurnace. From. the fire-place G c the fire-gases pass through channels H to the hearthroom I where they hit the lower part of the drum rotating in a direction op posed to that of the fire-gases. The surface of the drum may be provided with longitudinal projections which will give a whirling motion to the fire-gases during the rotation of the drum. In this way a rapid and uni.-

form heating of the material contained in the drum is secured. The fire-gases escape through the channel K arranged in the upper partof the heating chamber. This chan Specification of Letters Patent.

our invention, what we desire to Letters Patent of, the United Statesis:

1. In apparatus of the character described,

Mahatma o, 1910;

.lating' the temperature therein. The upper nel is provided with a slidef or' similar de LIKE roimmune part of the heating chamberis shut by means ofla removable cover L for opening the hearth-room when the drum isbrought into or 'tafken out of the furnace; TlilS: cover may be composed of one or more pieces.

The following is a description of the course of operating with this .furnace: The cover Lbenig removed from' the furnace 'for mstance by means of a truck 01?. crane, the drum A with the ma'terialto be treated is lifted by means of another truck or crane 'out of the washing tank into; which it has been previously brought according to Let- 'ters Patent 836,028 and is'put into the fur-M ,nace, the latter being thenclosed by' the cover L. P The pinion isstarted and the drum begins-to revolvefthe fire-gases be ing 'whir ed throughout the heating chain ber bythe motion of the The solder which is melted oil-'- from the heated old tmned boxes, fiows'down and is collected on the sole of'the hearth. After the contents of the drum being suiliciently heated, the passage of the fire-gases is shut ofi", the gearing is stopped, the, cover of the furnace is lifted-andthe drum is taken out of the heating chamber; the material in the drum is then ready for further detin'ning-treatment. Havmg'thus fully described the nature of secure. by

a heating chamber, a rotatable article-con ta iner suspended within said chamber, and

troducing heated air to said chamber in a direction tangential to tho periphery of.

the container and substantially intersecting '-its path of movement,-. and means-for rotating said container in a directiqn to provide movements of the peri hery mopposition to the direction of the introduction-flow of the heated air.

container and substantially intersecting its path of movement, and means located without the chamber for rotating said container in a direction to provide movements of the periphery in opposition to the direction of the introduction-flow of the heated air.

4. In apparatus of the character described, a furnace, a heating chamber spaced from said furnace, a passageway connecting the furnace and heating chamber, said passage-' way opening into the chamber adjacent its bottom and having the top of the air inlet spaced from the bottom of the chamber, and a rotatable article-container suspended within the chamber and having the path of movement of its periphery extendlng into the plane of the top of said opening, whereby incoming air currents Will substantially intersect the path of movement of the container.

5. In apparatus of the character described, a furnace, a heating chamber spaced from said furnace, a passageway connecting the furnace and heating chamber, said passa eway opening into the chamber adjacent 1ts bottom and having the top of the air inlet spaced from the bottom of the chamber, a

controlling damper for said passage-way,

' tinning, bearings and a rotatable article-container suspended within the chamber and having the path of movement of its peri her extending into the plane of the top ot sai o ening', whereby iiicoming air currents wil substantially intersect the path of movement of the containe'r.

6. In apparatus of the character described, a heating chamber, bearing brackets supported without said chamber and extendmg thereinto, an article-container mounted on said brackets, means located without said chamber for imparting a rotary movement to said container, and means for introducing heated air to said chamber in a direction tangential to the periphery of the container and substantiallyintersecting its path of movement. 1 7: Ina furnace for heating old tin, sheetiron boxes and the like preparatory to desupported in special groun work separate rom that of the furnace, and a removable rotary cylinder arranged in said furnace and journaled said bearings 5 In witness whereof we have hereunto set our hands in'the presence 'of two witnesses.

KARL GOLDSCHMIDT. JOSEF WEBER. Witnesseszv I L. MAX W'AHLGEMUTH,

F Awnnnomm 

